名詞 prerogative:

1. a right reserved exclusively by a particular person or group (especially a hereditary or official right)
   同義詞：privilege, perquisite, exclusive right

1. A monarch has the prerogative of mercy for criminals.
   君主享有對罪犯的赦免權。
2. It's the Prime Minister's prerogative to decide when to call an election.
   決定大選的日期是首相的特權。

pre.rog.a.tive

n.（名詞）
An exclusive right or privilege held by a person or group, especially a hereditary or official right.See Synonyms at right
特權：個人或群體擁有的獨有的權利或特權，尤指世襲或正式的權力參見 right
The exclusive right and power to command, decide, rule, or judge:
至高權力：命令，決定，統(tǒng)治或判斷的獨有的或勢力：
例句：
the principal`s prerogative to suspend a student.
校長所擁有的可除名學生的權力

A natural gift or advantage that confers superiority.
領先，突出：天賦的優(yōu)人一等的才能或優(yōu)勢
Characteristic superiority; preeminence.
高人一等，優(yōu)越，優(yōu)勢
adj.（形容詞）
Of, arising from, or exercising a prerogative.
特權的，因特權而有的或行使特權的

來源：
Middle English
中古英語
from Old French
源自 古法語
from Latin praerog3tova [feminine of] praerog3tovus [asked first]
源自 拉丁語 praerog3tova [] praerog3tovus的陰性詞 [首先被要求]
from praerog3tus [past participle of] praerog3re [to ask before]
源自 praerog3tus [] praerog3re的過去分詞 [預先問]
prae- [pre-]
prae- [前綴，表.在…之前.]
rog3re [to ask] * see reg-
rog3re [問，要求] *參見 reg-

【引伸】
prerog.atived
adj.（形容詞）